Long-service-life bearing anti-rust oil as well as preparation method and application thereof

Abstract

The invention discloses long-service-life bearing anti-rust oil and a preparation method and application thereof, and the long-service-life bearing anti-rust oil comprises the following components in parts by weight: 65-90 parts of base oil; 3 to 20 parts of barium sulfonate; 0.5 to 5 parts of calcium sulfonate; 0.5 to 4 parts of an extreme pressure anti-wear agent; the barium sulfonate is selected from at least one of neutral barium sulfonate and alkaline dinonyl naphthalene sulfonic acid barium salt; the calcium sulfonate is selected from at least one of medium-base-number petroleum calcium sulfonate, low-base-number calcium sulfonate, synthetic calcium sulfonate and calcium dinonyl naphthalene sulfonate. The long-service-life anti-rust oil for the bearing can realize long-period rust prevention of the bearing, and achieves a good technical effect. In the prior art, the protection performance of the anti-rust oil for the bearing is not long-term effective, and the long-life anti-rust oil for the bearing has good salt spray performance and wet heat performance and has a wide application market.

Description

Technical Field

[0001] The invention relates to the field of bearing rust prevention, and in particular to a long-life bearing rust prevention oil and a preparation method and application thereof. Background Art

[0002] A bearing is a part that supports a shaft. It can guide the rotation of the shaft and also bear the idling parts on the shaft. The bearing has the function of reducing friction and making the rotation smoother, and is an important mechanical component. Bearing rings and rollers are mainly high-carbon bearing steel. This material has a high carbon content. In the metallographic structure, there is a chemical potential difference due to the different chemical potentials of iron-carbon compounds and iron. Electrochemical corrosion is prone to occur in humid atmospheric environments and salty marine atmospheric environments. For specific materials and material combinations of bearings, it is necessary to be able to provide good protection on the surface of the bearing workpiece. The life of the bearing is positively correlated with its corrosion resistance. Therefore, long-life bearing anti-rust oil can ensure the efficient operation of the bearing. According to the current situation, a bearing anti-rust oil with a longer anti-rust cycle has been developed, which has a broad application market.

[0003] In the prior art, the Chinese invention patent application disclosure CN110776981A discloses a long-life bearing antirust oil and its preparation method, which is composed of the following components by weight percentage: base oil 15-25%; neutral barium sulfonate 10-15%; alkylbenzene sulfonate barium 2-5%; high base calcium sulfonate 2-5%; oxidized paraffin butyl ester 1-5%; emulsifier 1-2%; antioxidant 0.1-0.5%; the balance is solvent oil. However, the bearing antirust oil prepared by the invention does not have extreme pressure resistance data and the salt spray test in its antirust test is not less than 72 hours, which cannot fully meet some long-term needs. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention provides a long-life anti-rust oil for bearings with a long anti-rust period.

[0005] The first aspect of the present invention provides a rust-proof oil, which comprises the following components by weight: 65-90 parts of base oil; 6-20 parts of barium sulfonate; 0.5-5 parts of calcium sulfonate; and 0.5-4 parts of extreme pressure anti-wear agent. The barium sulfonate is selected from at least one of neutral barium sulfonate (brand T701B) and basic dinonylnaphthalene barium sulfonate (brand T705). More preferably, the barium sulfonate is selected from the barium sulfonate product with an effective content (barium sulfonate) greater than 50%; the calcium sulfonate is selected from at least one of medium-base petroleum calcium sulfonate (brand T102), low-base calcium sulfonate (brand T104), synthetic calcium sulfonate (brand T105), and dinonylnaphthalene calcium sulfonate (brand T105C).

[0006] The neutral barium sulfonate and medium-base petroleum calcium sulfonate described in the present invention have base values ​​below 20 mgKOH / g.

[0007] The low-alkalinity calcium sulfonate of the present invention has an alkalinity of 30-50 mgKOH / g.

[0008] The anti-rust oil provided by the present invention uses 45# steel sheet as the ferrous metal anti-rust performance test, and the wet heat test time is greater than 600 hours, the longer time is 648 hours, and the longest time is 696 hours; the salt spray test time is not less than 96 hours, and the longest time is 120 hours.

[0009] According to some embodiments of the rust-proof oil of the present invention, preferably, the long-life bearing rust-proof oil comprises the following components in parts by weight: 70 to 90 parts of base oil; 8 to 12 parts of barium sulfonate; 0.5 to 2 parts of calcium sulfonate; and 0.5 to 2 parts of extreme pressure anti-wear agent.

[0010] According to some embodiments of the rust preventive oil of the present invention, preferably, the base oil is selected from at least two of mineral base oils and synthetic base oils.

[0011] According to some embodiments of the rust preventive oil of the present invention, preferably, the mineral base oil is selected from at least one of MVI 60, MVI 70, MVI 75, MVI 100, MVI 125, MVI 150, HVI 60, HVI 75, HVI 100, HVI 125, HVI 150, HVI 500, HVI 650, HVI II-2, HVI II-4 and light white oil.

[0012] According to some embodiments of the rust preventive oil of the present invention, preferably, the synthetic base oil is selected from at least one of dodecylbenzene and hexadecylbenzene.

[0013] According to some embodiments of the rust-proof oil of the present invention, preferably, the extreme pressure anti-wear agent is selected from at least one of di-n-butyl phosphite (brand T304), nitrogen-containing derivatives of thiophosphoric acid (brand T305), phenyl thiophosphate (brand T309), and amine thiophosphate (brand T310).

[0014] The second aspect of the present invention provides a method for preparing the above-mentioned rust-proof oil, comprising: mixing base oil with barium sulfonate, calcium sulfonate and an extreme pressure anti-wear agent, heating and then subjecting the mixture to constant temperature treatment, cooling and then filtering to obtain the rust-proof agent.

[0015] As a specific implementation, after the base oil is heated, barium sulfonate, calcium sulfonate and extreme pressure anti-wear agent are added in sequence, stirred at a constant temperature, cooled and filtered to obtain the rust inhibitor.

[0016] Preferably, the heating temperature is 70-80°C.

[0017] The heating temperature is 70° C., 75° C., 80° C., or any value between any two of the above points.

[0018] According to some embodiments of the method of the present invention, preferably, the constant temperature is 60-70°C.

[0019] The constant temperature is 60° C., 65° C., 70° C., or any value between any two of the above points.

[0020] Preferably, the stirring time is 2 to 4 hours.

[0021] The stirring time is 2 hours, 3 hours, 4 hours, or any value between any two of the above points.

[0022] Preferably, the cooling is to a temperature of 35-45°C.

[0023] Preferably, the filtration is bag filtration.

[0024] According to another specific embodiment of the method of the present invention, the preparation method comprises:

[0025] (1) Prepare the following raw materials in parts by weight: 65-90 parts of base oil; 3-20 parts of barium sulfonate; 0.5-5 parts of calcium sulfonate; 0.5-4 parts of extreme pressure anti-wear agent; wherein the base oil is selected from at least two of mineral base oil and synthetic base oil; the barium sulfonate is selected from at least one of neutral barium sulfonate and basic dinonylnaphthalene barium sulfonate; the calcium sulfonate is selected from at least one of medium-base petroleum calcium sulfonate, low-base calcium sulfonate, synthetic calcium sulfonate, and dinonylnaphthalene calcium sulfonate; the extreme pressure anti-wear agent is selected from at least one of di-n-butyl phosphite (brand T304), nitrogen-containing derivatives of thiophosphoric acid (brand T305), phenyl thiophosphate (brand T309), and amine thiophosphate (brand T310);

[0026] (2) adding the base oil into a stirred reactor, stirring at a constant temperature of 70 to 80° C. until completely dissolved, to obtain material I;

[0027] (3) Add barium sulfonate, calcium sulfonate and extreme pressure anti-wear agent to material I in sequence, and stir at a constant temperature of 60 to 70° C. for 2 to 4 hours to obtain material II;

[0028] (4) After material II is cooled to below 40°C, it is bag filtered to obtain long-life bearing anti-rust oil.

[0029] The third aspect of the present invention provides the use of the above-mentioned rust-proof oil or the rust-proof oil obtained by the above-mentioned preparation method in long-term rust prevention of bearings.

[0030] Beneficial effects of the present invention:

[0031] The long-life bearing rust-proof oil provided by the present invention has good rust-proof performance and extreme pressure anti-wear performance by selecting base oil, barium sulfonate, calcium sulfonate and extreme pressure anti-wear agent. It can also be seen from the experimental results that the long-life bearing rust-proof oil finally prepared is used for long-term rust prevention of bearings. In the salt spray rust prevention effect test, under the condition of 35°C±1°C, when the rust grade of the 45# steel sheet is grade A, the required test time can be up to 96 hours at most, and the salt spray rust prevention performance is good; in the wet heat rust prevention performance test, under the conditions of 49°C±1°C and relative humidity of 95%, when the rust grade of the 45# steel sheet is grade A, the required test time can be up to 600 hours, and the wet heat rust prevention performance is good. Therefore, the long-life bearing rust-proof oil can realize long-term rust prevention of bearings and achieve good technical effects. The protective performance of the bearing antirust oil in the prior art is not effective enough in the long term. The long-life bearing antirust oil of the present invention has good salt spray performance and wet heat performance and has a broad application market. DETAILED DESCRIPTION

[0032] In order to make the present invention more easily understood, the present invention will be described in detail below in conjunction with embodiments. These embodiments are only for illustration and are not intended to limit the application scope of the present invention.

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this patent in detail and do not limit the scope of protection of the present invention in any way. Unless otherwise defined, the technical terms used in the following embodiments have the same meanings as those generally understood by technicians in the field to which the present invention belongs. The reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the raw materials, instruments and equipment used in the following examples, etc., can all be purchased on the market or can be obtained by existing methods; the reagent dosage, unless otherwise specified, is the reagent dosage in conventional experimental operations; the experimental methods, unless otherwise specified, are all conventional methods.

[0034] The above raw materials in the present invention can be made by yourself, or the following raw materials can be obtained commercially:

[0035] Neutral barium sulfonate, brand T701B;

[0036] Basic barium dinonylnaphthalenesulfonate, brand T705;

[0037] Medium base value petroleum calcium sulfonate, brand T102;

[0038] Low base calcium sulfonate, brand T104;

[0039] Synthetic calcium sulfonate, brand T105;

[0040] Calcium dinonylnaphthalenesulfonate, brand T105C;

[0041] Di-n-butyl phosphite, brand T304;

[0042] Nitrogen-containing derivatives of thiophosphoric acid, brand T305;

[0043] Phenyl thiophosphate, brand T309;

[0044] Thiophosphate amine salt, brand T310.

[0045] Example 1

[0046] Anti-rust oil, measured by weight, consists of the following components:

[0047] Base oil: HVI 75, 51.5 parts; dodecylbenzene, 38.3 parts;

[0048] Barium sulfonate: neutral barium sulfonate, 8 parts;

[0049] Calcium sulfonate: medium base petroleum calcium sulfonate, 1.5 parts;

[0050] Extreme pressure anti-wear agent: di-n-butyl phosphite, 0.7 parts.

[0051] Preparation method of rust-proof oil: prepare raw materials according to the above components; add base oil into a stirring reactor, stir at a constant temperature of 75±5°C until completely dissolved to obtain material I; add barium sulfonate, calcium sulfonate and extreme pressure anti-wear agent to material I in sequence, stir at a constant temperature of 65±5°C for 3.5±0.5h to obtain material II; after material II is cooled to below 40°C, filter it with a 10μm bag filter to obtain long-life bearing rust-proof oil 1#.

[0052] Example 2

[0053] Anti-rust oil, measured by weight, consists of the following components:

[0054] Base oil: HVI 75, 51.5 parts; HVI 500, 35.8 parts;

[0055] Barium sulfonate: neutral barium sulfonate, 8 parts; basic barium dinonylnaphthalene sulfonate, 3 parts;

[0056] Calcium sulfonate: medium base petroleum calcium sulfonate, 1 part;

[0057] Extreme pressure anti-wear agent: phenyl thiophosphate, 0.7 parts.

[0058] The preparation method of the rust-proof oil is the same as that of Example 1, and a long-life bearing rust-proof oil 2# is obtained.

[0059] Example 3

[0060] Anti-rust oil, measured by weight, consists of the following components:

[0061] Base oil: HVI 100, 40 parts; HVI 500, 47 parts;

[0062] Barium sulfonate: neutral barium sulfonate, 8 parts; basic barium dinonylnaphthalene sulfonate, 3 parts;

[0063] Calcium sulfonate: medium base petroleum calcium sulfonate, 1 part;

[0064] Extreme pressure anti-wear agent: di-n-butyl phosphite, 1 part.

[0065] The preparation method of the rust-proof oil is the same as that of Example 1, and a long-life bearing rust-proof oil 3# is obtained.

[0066] Example 4

[0067] Anti-rust oil, measured by weight, consists of the following components:

[0068] Base oil: MVI 150, 42 parts; HVI 500, 45 parts;

[0069] Barium sulfonate: neutral barium sulfonate, 8 parts; basic barium dinonylnaphthalene sulfonate, 3 parts;

[0070] Calcium sulfonate: medium base petroleum calcium sulfonate, 1 part;

[0071] Extreme pressure anti-wear agent: di-n-butyl phosphite, 1 part.

[0072] The preparation method of the anti-rust oil is the same as that of Example 1, and a long-life bearing anti-rust oil 4# is obtained.

[0073] Example 5

[0074] Anti-rust oil, measured by weight, consists of the following components:

[0075] Base oil: HVI 150, 40 parts; HVI 650, 46 parts;

[0076] Barium sulfonate: neutral barium sulfonate, 4 parts; basic barium dinonylnaphthalene sulfonate, 8 parts;

[0077] Calcium sulfonate: synthetic calcium sulfonate, 1 part;

[0078] Extreme pressure anti-wear agent: di-n-butyl phosphite, 1 part.

[0079] The preparation method of the rust-proof oil is the same as that of Example 1, and a long-life bearing rust-proof oil 5# is obtained.

[0080] Example 6

[0081] Anti-rust oil, measured by weight, consists of the following components:

[0082] Base oil: HVI 100, 40 parts; HVI 500, 47 parts;

[0083] Barium sulfonate: neutral barium sulfonate, 8 parts; basic barium dinonylnaphthalene sulfonate, 3 parts;

[0084] Calcium sulfonate: synthetic calcium sulfonate, 1 part;

[0085] Extreme pressure anti-wear agent: nitrogen-containing derivative of sulfuric acid, 1 part.

[0086] The preparation method of the rust-proof oil is the same as that of Example 1, and a long-life bearing rust-proof oil 6# is obtained.

[0087] Example 7

[0088] Anti-rust oil, measured by weight, consists of the following components:

[0089] Base oil: MVI 100, 40 parts; HVI 650, 48 parts;

[0090] Barium sulfonate: neutral barium sulfonate, 2 parts; basic barium dinonylnaphthalene sulfonate, 8 parts;

[0091] Calcium sulfonate: calcium dinonylnaphthalene sulfonate, 1 part;

[0092] Extreme pressure anti-wear agent: thiophosphate amine salt, 1 part.

[0093] The preparation method of the rust-proof oil is the same as that of Example 1, and a long-life bearing rust-proof oil 7# is obtained.

[0094] Comparative Example 1

[0095] Anti-rust oil, measured by weight, consists of the following components:

[0096] Base oil: MVI 100, 40 parts; HVI 650, 50 parts;

[0097] Barium sulfonate: basic barium dinonylnaphthalene sulfonate, 9 parts;

[0098] Extreme pressure anti-wear agent: di-n-butyl phosphite, 1 part.

[0099] The preparation method of the rust-proof oil is the same as that of Example 1, and the bearing rust-proof oil A is obtained.

[0100] Comparative Example 2

[0101] Anti-rust oil, measured by weight, consists of the following components:

[0102] Base oil: MVI 100, 40 parts; HVI 650, 49 parts;

[0103] Barium sulfonate: neutral barium sulfonate, 10 parts;

[0104] Extreme pressure anti-wear agent: thiophosphate amine salt, 1 part.

[0105] The preparation method of the rust-proof oil is the same as that of Example 1, and the bearing rust-proof oil B is obtained.

[0106] Comparative Example 3

[0107] Anti-rust oil, measured by weight, consists of the following components:

[0108] Base oil: MVI 100, 50 parts; HVI 650, 40 parts;

[0109] Barium sulfonate: neutral barium sulfonate, 2 parts; basic barium dinonylnaphthalene sulfonate, 3 parts;

[0110] Calcium sulfonate: calcium dinonylnaphthalene sulfonate, 2 parts; synthetic calcium sulfonate, 6 parts;

[0111] Extreme pressure anti-wear agent: thiophosphate amine salt, 2 parts.

[0112] The preparation method of the rust-proof oil is the same as that of Example 1, and the bearing rust-proof oil C is obtained.

[0113] Test Case

[0114] The performance of the bearing antirust oils prepared in Examples 1-7 and Comparative Examples 1-3 was tested.

[0115] Various performance tests of ferrous metals are carried out using 45# steel sheets as a representative.

[0116] (1) The degreasing performance is tested according to JB / T4323.2-1999.

[0117] (2) The damp heat test time is tested according to GB / T 2361-1992.

[0118] (3) Salt spray test time is tested according to SH / T 0081-1991.

[0119] Table 1 Performance index data of rust-proof oil in Examples 1 to 7 and Comparative Examples 1 to 3

[0120]

[0121] As can be seen from Table 1, in the rust-proof performance test of the long-life bearing rust-proof oil prepared in Examples 1 to 7, the wet heat test time of Examples 1 to 7 is greater than 600h, and the salt spray test time is not less than 96h, which shows that the long-life bearing rust-proof oil prepared by the present invention has good rust-proof performance; compared with the use of barium sulfonate and calcium sulfonate alone (Comparative Examples 1 and 2), the overall rust-proof performance (wet heat test, salt spray test) is better; compared with Comparative Example 3, although barium sulfonate and calcium sulfonate are used at the same time, the proportion of barium sulfonate is less than 6%, and the overall rust-proof performance (wet heat test, salt spray test) is still not more than 48h. Therefore, barium sulfonate and calcium sulfonate can be compounded to enhance the rust-proof performance, but the proportion of barium sulfonate must be greater than 6% to make the salt spray test time not less than 96, so the technical effect of the long-life bearing rust-proof oil of the present invention is excellent.

[0122] Therefore, the long-life bearing antirust oil prepared by the synergistic ratio of base oil, barium sulfonate, calcium sulfonate and extreme pressure antiwear agent in the present invention has good antirust performance and can be used in long-term antirust applications of bearings.

[0123] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, under the technical enlightenment provided by the present invention, as common knowledge in the field, other equivalent variations and improvements can also be made, which should also be regarded as the protection scope of the present invention.

Claims

1. Anti-rust oil, in parts by weight, including the following components: 65-90 parts of base oil; 6-20 parts of barium sulfonate; 0.5-5 parts of calcium sulfonate; 0.5 to 4 parts of extreme pressure anti-wear agent; The barium sulfonate is selected from at least one of neutral barium sulfonate and basic barium dinonylnaphthalene sulfonate; The calcium sulfonate is selected from at least one of medium-base petroleum calcium sulfonate, low-base calcium sulfonate, synthetic calcium sulfonate and dinonylnaphthalene calcium sulfonate.

2. The rust-proof oil according to claim 1, characterized in that: Anti-rust oil, in parts by weight, comprises the following components: 70-90 parts of base oil; 8-12 parts of barium sulfonate; 0.5-2 parts of calcium sulfonate; 0.5 to 2 parts of extreme pressure anti-wear agent.

3. The rust-proof oil according to claim 1, characterized in that: The base oil is selected from at least two of mineral base oil and synthetic base oil.

4. The rust-proof oil according to claim 3, characterized in that: The mineral base oil is selected from at least one of MVI 60, MVI 70, MVI 75, MVI 100, MVI 125, MVI 150, HVI 60, HVI 75, HVI 100, HVI 125, HVI 150, HVI 500, HVI 650, HVI II-2, HVI II-4 and light white oil.

5. The rust-proof oil according to claim 3, characterized in that: The synthetic base oil is selected from at least one of dodecylbenzene and hexadecylbenzene.

6. The rust-proof oil according to any one of claims 1 to 5, characterized in that: The extreme pressure anti-wear agent is selected from at least one of di-n-butyl phosphite, nitrogen-containing derivatives of thiophosphoric acid, phenyl thiophosphate, and amine thiophosphate.

7. The method for preparing the rust preventive oil according to any one of claims 1 to 6, comprising: The base oil is mixed with barium sulfonate, calcium sulfonate and an extreme pressure anti-wear agent, subjected to constant temperature treatment after heating, and filtered after cooling to obtain the rust inhibitor.

8. The preparation method according to claim 7, characterized in that: The heating temperature is 70-80°C.

9. The preparation method according to claim 7, characterized in that: The constant temperature is 60-70°C; And / or, the stirring time is 2 to 4 hours; And / or, the cooling to a temperature of 35 to 45°C; And / or, the filtration is bag filtration.

10. Use of the rust-proof oil according to any one of claims 1 to 6 or the rust-proof oil obtained by the preparation method according to any one of claims 7 to 9 in bearing rust prevention.

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